Improving the separation of diamond from gangue minerals

Details Improving the separation of diamond from gangue minerals Improving the separation of diamond from gangue minerals

C - Chemistry, Metallurgy

01

B

C01B 31/06 (2006.01)

Patent

CA 2597176

The present invention relates to a method for separating diamond from gangue minerals. In particular, this method relates to the addition of a first reagent or reagents which contact the diamond in diamond ore slurry to at least partially remove hydrophilic coatings from the diamond surfaces. A second reagent or reagents may also be added to the slurry so that the reagent may adsorb on the diamond surfaces and thereby enhance the hydrophobicity of diamonds. The increase in hydrophobicity may improve the flotation of diamonds.

L'invention concerne un procédé permettant de séparer un diamant de minéraux de gangue. Ledit procédé consiste, en particulier, à ajouter un premier réactif ou des réactifs qui entrent en contact avec le diamant dans une bouillie de minerai de diamant afin d'éliminer au moins partiellement les revêtements hydrophiles des surfaces du diamant. Un second réactif ou des réactifs peuvent être ajouté(s) à la bouillie de sorte que ledit réactif peut être adsorbé sur les surfaces du diamant, ce qui permet d'améliorer le caractère hydrophobe des diamants. L'augmentation du caractère hydrophobe permet d'améliorer la flottation des diamants.

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